Clearing (telecommunications)

This article includes a list of references, related reading or external links, but its sources remain unclear because it lacks inline citations. Please help to improve this article by introducing more precise citations. (November 2021) (Learn how and when to remove this template message)

Clearing, in telecommunications means:

• A sequence of events used to disconnect a call and return to the ready state for the next call setup. It is sometimes, particularly in the context of common-channel signaling, called teardown.
• Removal of data from an automated information system (AIS), its storage devices, and other peripheral devices with storage capacity, in such a way that the data may not be reconstructed using normal system capabilities (i.e. through the keyboard).

Note: An AIS need not be disconnected from any external network before clearing takes place. Clearing enables a product to be reused within, but not outside of, a secure facility. It does not produce a declassified product by itself, but may be the first step in the declassification process.

See also[]

• Disengagement originator
• National Information Systems Security Glossary

References[]

 This article incorporates public domain material from the General Services Administration document: "Federal Standard 1037C". (in support of MIL-STD-188)

This article related to telecommunications is a stub. You can help Wikipedia by .

• v
• t